US4214861A - Method of and an apparatus for making preforms from a pourable substance - Google Patents

Method of and an apparatus for making preforms from a pourable substance Download PDF

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Publication number
US4214861A
US4214861A US05/904,561 US90456178A US4214861A US 4214861 A US4214861 A US 4214861A US 90456178 A US90456178 A US 90456178A US 4214861 A US4214861 A US 4214861A
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Prior art keywords
screen
container
substance
vibratory
mold
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Expired - Lifetime
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US05/904,561
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English (en)
Inventor
Edmund Munk
Hermann Henke
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WERZALIT-PRESSHOLZWERK J F WERZ JR KG
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WERZALIT-PRESSHOLZWERK J F WERZ JR KG
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Priority claimed from DE19762618599 external-priority patent/DE2618599C3/de
Priority claimed from DE19762621717 external-priority patent/DE2621717C2/de
Priority claimed from DE19772709467 external-priority patent/DE2709467C3/de
Application filed by WERZALIT-PRESSHOLZWERK J F WERZ JR KG filed Critical WERZALIT-PRESSHOLZWERK J F WERZ JR KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N5/00—Manufacture of non-flat articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/14—Distributing or orienting the particles or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/14—Distributing or orienting the particles or fibres
    • B27N3/143—Orienting the particles or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N5/00—Manufacture of non-flat articles
    • B27N5/02—Hollow articles

Definitions

  • the present invention relates to a method of and an apparatus for making preforms from a pourable but at most limitedly flowable substance for subsequent use in producing three-dimensional profiled articles, particularly for use in connection with a substance which is a mixture of fillers and binders.
  • the thickness of the layer of the mixture in the compression mold amounts to 4 to 7 times the thickness of the finished profiled article at the particular region thereof.
  • the preform is inserted into a hot compressing mold, possibly after or simultaneously with coating with a protective or decorative layer, and the preform obtains its final shape in the hot compressing mold, under the influence of pressure and elevated temperature, and the thus-obtained article hardens and, possibly, is simultaneously provided with a decorative or protective layer.
  • the above-mentioned mold which is being filled with the mixture may be a hot compressing mold in which the article is directly produced without the intermediary of the preform.
  • the quality of the pressed profiled article depends on the fact whether or not it possesses, throughout, the density and/or fibrous structure which are necessary for the achievement of the desired mechanical properties. These properties are, to a great extent, dependent on the fact what degree of care has been exercised during the filling of the mixture into the lower mold.
  • the filling has been accomplished, during the production of profiled articles of non-excessive dimensions, in such a manner that a predetermined and metered amount of the mixture has been admitted to the lower mold either out of a measuring container or, by means of an automatic metering arrangement, from a storage container, after which such a predetermined metered amount has been manually distributed over the lower mold either uniformly, or non-uniformly, dependent on the particular requirements. It will be appreciated that, when the metered amount of the mixture is distributed in this manner, the desired properties throughout the article are very rarely, if ever, achieved and, many a time, such properties are left, to a large degree, to chance.
  • a concomitant object of the present invention is to design an apparatus which is capable of performing the above-mentioned method.
  • a further object of the present invention is to so construct such apparatus as to be simple in construction, reliable in operation and inexpensive to manufacture.
  • a yet another object of the present invention is to so construct an apparatus as to permit the automation of the filling procedure.
  • a method of making preforms from a pourable but at most limitedly flowable substance for subsequent use in producing three-dimensionally profiled articles which comprises the steps of defining a forming space of a configuration substantially corresponding to that of a preform to be made, between a perforated bottom element of a container element, and a mold element; and distributing the substance throughout such forming space, including admitting the substance to said forming space, and vibrating at least one of said elements.
  • the admitting of the substance includes placing the substance into a filling space bounded by said container and bottom elements.
  • the vibrating step includes imparting vibratory movement to at least one of the bottom and container elements to pass the substance from said filling into said forming space through the perforations of said bottom element.
  • the present inventive method is to be, to advantage, used in producing preforms for articles of uniform wall thickness despite the fact that the articles have a strongly profiled configuration and include, in particular, steep wall portions.
  • the vibrating may include imparting vibratory movement to said bottom element substantially along a horizontal plane to compact the substance in the forming space.
  • the preform which is being made, under these circumstances will have surfaces parallel to, and also surfaces inclined relative to, the horizontal plane. Then, the imparting step may be so performed that the substance of the preform is preferentially compacted in the regions of the inclined surfaces.
  • the method according to the present invention can be used, to a great advantage, in the production of pellets in one piece from the above-mentioned materials.
  • the method of the present invention and the associated equipment which will be presently discussed in more detail, are capable of producing even such articles, and of giving them uniform wall thickness.
  • another facet of the present invention resides in an apparatus for making preforms from a pourable but at most limitedly flowable substance for subsequent use in producing three-dimensional articles, which apparatus comprises means for defining a forming space of a configuration substantially corresponding to that of a preform to be made, including a perforated bottom element of a container element, and a mold element; and means for distributing the substance throughout said forming space, including means for admitting the substance to said forming space, and means for vibrating at least one of said elements.
  • the container and bottom elements bound a filling space with one another, and the admitting means then includes means for introducing the substance into said filling space and onto said bottom element, from where the substance passes through the perforated bottom element from the filling space into the forming space.
  • the apparatus of the present invention may further preferably comprise means for elastically supporting at least said one of said elements, and said vibrating means may include a vibratory drive connected to said one of said elements.
  • the container and bottom elements are rigid with one another, and the supporting means includes a support frame, and a plurality of elastic damper bodies suspending said container element from said support frame.
  • the container element of this modification has an open upper end, and the apparatus comprises a stationary transverse member extending upwardly of and across said open upper end of said container element, said vibratory drive being mounted on said transverse member.
  • the supporting means may include eccentric supports mounting said bottom element on said container element.
  • said vibratory drive is located at the exterior of said container element, and said vibrating means further includes at least one link connecting said vibratory drive to said bottom element.
  • the bottom element may include a mesh, particularly of metallic wires which is mounted on and spans a frame, or it may include a grating, especially constituted by a plurality of bars which bound the above-mentioned perforations.
  • at least some of the perforations of the bottom element are elongated.
  • the bottom element has at least one region deviating from a general plane of the bottom element, and then the bottom element has a side wall portion at such region.
  • Such region may have surfaces which are inclined relative to such general plane, and the side wall portion may be provided only at such surfaces.
  • a very advantageous embodiment of the present invention is obtained when said bottom element includes two perforated members which are mounted for relative movement at a small distance from one another along a common plane, the vibrating means including at least one vibratory drive, and means for so connecting such vibratory drive to at least one of said members that the latter conducts vibratory movement relative to the other member during the energization of the vibratory drive.
  • the apparatus then further comprises means for so connecting the vibrating means also to the other member that the two members conduct independent vibratory movements with respect to one another during the energization of the vibrating means.
  • a first of the members is interposed between a second of the members and said mold element. Then, the perforations of the second member may be spaced from one another by spacings which are greater than the distances between the perforations of the first member. The spacings may be between two and six times greater than the distances which, in turn, may be rather small.
  • the vibrating means may include at least one vibratory drive, and means for so connecting the vibratory drive to the first and second members that the former conducts linear vibratory movements while the latter conducts vibratory translations along a substantially circular trajectory.
  • the first member may perform 20 to 100 strokes per minute, while the second member may perform 200 to 1000 vibratory translations per minute.
  • FIG. 1 is a vertical section of the apparatus of the present invention prior to the filling of a forming space with the substance;
  • FIG. 2 is a view similar to FIG. 1 but subsequent to the filling of the forming space with the substance;
  • FIG. 3 is a view similar to FIG. 1 but of a modified apparatus
  • FIG. 4 is a top plan view of the apparatus of FIG. 3;
  • FIG. 5a is a cross-sectional view of one final article of profiled configuration for which the preform can be made in the apparatus of FIGS. 1 to 4;
  • FIG. 5b is a partial sectional view similar to FIG. 2 for making the preform for the final article of FIG. 5a;
  • FIG. 6a is a view similar to FIG. 5a but of another profiled final article
  • FIG. 6b is a view similar to FIG. 5b but for making a preform for the final article of FIG. 6a;
  • FIG. 7a is a view similar to FIG. 5a but of still another final article
  • FIG. 7b is a view similar to FIG. 5b but for making the preform for the final article of FIG. 7a;
  • FIG. 8a is a view similar to FIG. 5a but of a corrugated final article
  • FIG. 8b is a view similar to FIG. 5b but illustrating the arrangement for making the preform for the corrugated final article of FIG. 8a;
  • FIG. 9 is a partial vertical sectional view for making a preform for a pellet, taken in the region of the pellet leg;
  • FIG. 10 is a view similar to FIG. 9 but as utilized in making a preform for a concrete casting body, taken in the region in which the body has a deep recess;
  • FIG. 11 is a partial vertical cross-sectional view similar to FIGS. 1 to 3 but illustrating a special construction of a bottom of a container.
  • This apparatus should be capable of filling a precisely metered amount of a non-flowable, such as fibrous, substance into a cavity of a lower mold, and of repeating the filling as often as needed for making a series of preforms, in such a manner that the substance made into a preform can be pressed into a final article with straight or corrugated, for instance, undulated or pronouncedly profiled configuration and/or of different densities in different regions of the final article.
  • a non-flowable such as fibrous
  • the apparatus should also make it possible to automatically terminate the filling operation upon filling of the substance into the mold.
  • the apparatus should be of such construction as to be capable of being brought in a simple manner toward the mold, removed from the mold, and otherwise operated.
  • the apparatus of the present invention includes a box-shaped container member 1 which is so configurated as to be capable of alignment with a lower mold 2.
  • a bottom element 3 is connected to the lower end of the container 1, the bottom element 3 being provided with a plurality of openings or perforations.
  • the bottom element 3 is a sieve.
  • the container 1 is elastically suspended, which is achieved, in this embodiment, by means of damping bodies 4, such as of natural or synthetic rubber in which there are embedded metallic connecting aids, the damping bodies 4 supporting the container 1 on a frame 11.
  • the container 1 has an open upper end, and a transverse member or bracket 12 extends across the open upper end of the container 1, a vibratory drive 5 being supported on the bracket 12.
  • the vibratory drive 5 preferably swings the container 1 along a horizontal plane, and the vibratory or swinging motion may be a translation along a circular, elliptical or otherwise shaped trajectory.
  • the vibratory drive 5 can be mounted, as illustrated in FIGS. 1 and 2, on the container 1 or, alternatively, next to the apparatus.
  • the lower mold 2 has such a configuration as to be capable of making a preform, or producing a final article, with a reinforced margin, such as a table top.
  • the bottom of the lower mold 2 is so formed in two parts that one of the parts is movable relative to the other part in the vertical direction.
  • the container 1 is filled with a non-flowable mixture or substance, wherein the filling is performed either manually from a measuring receptacle, or automatically from a storage vessel, in a metered amount.
  • the apparatus may further include an upper mold which, however, is not illustrated in FIGS. 1 and 2. The reason for this is that the upper mold has no special features which would be of importance in connection with the present invention.
  • the upper mold which is moved against the lower mold 2 after the filling of the lower mold 2 with the pourable substance has a planar surface at the region thereof which will come into contact with the pourable substance in the lower mold 2.
  • the non-flowable but pourable mixture or substance present in the container 1 trickles or passes through the perforated bottom element 3 and into the cavity of the lower mold 2, until the forming space defined from below by the lower mold 2 and from above by the bottom element 3 of the container 1 is filled with the pourable mixture.
  • additional amounts of the pourable substance enter into those regions of the forming space from which the pourable substance is still absent, until the filling of the forming space is uniform and complete.
  • the exact metering of the amount of the mixture or substance is automatic.
  • the apparatus of the present invention achieves the advantage that, on the one hand, the needed amount of the mixture or substance is absolutely automatically filled into the forming space and, on the other hand, the desired distribution of the mixture or substance is also achieved absolutely automatically as a result of the fact that the configuration of the bottom element 3 is accommodated to the desired shape and/or density of the preform and of the final article, in addition to the proper shaping of the surfaces of the lower mold 2 which bound the forming space from below.
  • the novel apparatus can be used, to advantage, either for metered filling of the substance into a precompressing lower mold in which the preform is first made and then, in a subsequent operation, the preform is shaped to the final configuration of the article being produced, by hot pressing, or in a hot pressing mld in which the article is compressed in a single operation.
  • FIGS. 3 and 4 differentiates from the above-discussed embodiment by the fact that the sieve-shaped bottom element 3 consists of a grating 8 constituted by a plurality of parallel rods or slots 7.
  • the bottom element 3 is configurated in this manner, the substance is not only automatically poured into and distributed in the forming spaced in a metered quantity, but also the, for example, filament-shaped particles of the substance are automatically preferentially oriented in the directions of the rods or slots 7.
  • the preferential orientation of the substance from which the final article is produced gives the latter the needed mechanical strength. This is particularly true when the particles contain or consist of cellulose or ligna cellulose.
  • FIGS. 3 and 4 of the apparatus of the present invention differs from the above-discussed embodiment in that the container 1 is so constructed as to be fittingly assemblable with the lower mold 2, and the bottom element 3 is mounted on the container 1 by means of eccentric bearings 14.
  • the vibratory drive 5 is located to the outside of the container 1. The vibrations generated by the vibratory drive 5 are transmitted to the sieve-shaped bottom element 3 by means of conventional links and levers.
  • FIGS. 5a to 8b it is illustrated that the novel apparatus is capable of filling forming spaces with the pourable substance preparatory to the production of profiled bodies or articles of various configurations.
  • FIGS. 5a illustrates, in vertical section, an already finally pressed profiled article which is heavily corrugated, that is, strongly uneven.
  • the article illustrated in FIG. 5a has a substantially uniform wall thickness and, when finally compressed, a uniform density.
  • a precisely metered and distributed preform of the substance, which is needed for the production of such a profiled article, can be obtained by resorting to the use of the novel apparatus in such a manner that the sieve-shaped bottom element 3 has the shape which is evident from FIG. 5b.
  • FIG. 6a illustrates, in a longitudinal section, another already finally pressed profiled body or article of a different configuration from that of FIG. 5a, the upper surface of this body being planar and the lower surface of which is formed with rib-shaped reinforcing portions extending into the plane of the drawing.
  • the preform for the production of such a profiled body from the substance or mixture can also be made by resorting to the use of the novel apparatus in that the sieve-shaped bottom element 3 has the shape illustrated in FIG. 6b. It is to be also mentioned that the profiled article according to FIG. 6a should also have a uniform density throughout.
  • the preform is compressed by means of a non-illustrated upper mold which has a planar lower surface, against the lower mold 13 having the configuration which is recognizable from FIG. 6b.
  • FIG. 7a shows, in a longitudinal sectional view, a further already finally pressed profiled body or article which is fully even and plank-shaped which, however, in its final state, should have different densities in various regions thereof. This is indicated in FIG. 7a in such a manner that the middle region of the finished article, in which the article has a higher density, has a more congested hatching.
  • the sieve-shaped bottom element 3 is configurated in the manner illustrated in FIG. 7b.
  • the lower mold 13, as well as the non-illustrated upper mold, have planar surfaces.
  • FIG. 8a A still another profiled article in its final form is illustrated in FIG. 8a.
  • This is, for instance, as illustrated in section, an even plate which is, in the central portion thereof, provided with a channel-shaped depression.
  • the article has a smaller thickness in its even region than in the region of the depression.
  • the sieve-shaped bottom element 3 is planar as illustrated in FIG. 8b. Then, the lower mold 13 and the non-illustrated upper mold are formed with corresponding depressions or projections.
  • the new apparatus brings about considerable advantages in mass production of pressed profiled articles, inasmuch as it is capable of introducing the substance into the lower mold in the desired amont which is the same for all of the preforms of a series, and even in differently pre-selected distribution.
  • the apparatus of the present invention can be easily handled during the use thereof inasmuch as it can be assembled with the lower mold by simple means, for instance, by tilting, lateral displacement or lowering, and rapidly removed from its assembled condition subsequent to the termination of the filling of the lower mold.
  • the container can be replenished with the substance by known means, either on a continuous or on an intermittent basis.
  • the new apparatus thus brings about not only a significant simplification of the operation during the production of pressed profiled articles, but also results in a high and uniform quality.
  • FIGS. 9 and 10 illustrate modified embodiments of the apparatus of the present invention which are capable of performing the method of the present invention for making preforms for profiled articles from a non-flowable but pourable substance, which articles have a substantially uniform wall thickness and very steep wall portions.
  • the reference numeral 13 indicates the lower mold in which the preform of uniform thickness is to be formed.
  • the article which is produced from the preform then has the thickness which is illustrated by the layer 15.
  • the shape of the article to be pressed is machined into the lower mold 13.
  • the sieve-shaped bottom 3 has a configuration corresponding to that of the article to be produced.
  • the bottom element 3 is arranged at such a distance from the lower mold 13, which corresponds to the thickness of the preform to be made.
  • the thickness of the preform amounts to four to seven times the thickness of the final profiled article.
  • the sieve-shaped bottom element 3 is constructed as a solid wall in those regions in which the preform is to have a very steep slope, that is, at the flanks and at the bottom of a pellet leg of a pellet to be produced.
  • the sieve-shaped bottom element 3 as illustrated by an arrow, conducts horizontal orbiting movement during the filling and/or after the filling of the forming space 16 with the substance, with such an amplitude that the preform is already compacted or densified to some extent, at least in the regions of the steep flanks. After this operation, the preform still has a thickness which is two to four times greater than the thickness of the final article.
  • the horizontal displacement, which the sieve-shaped bottom element 3 performs during the compacting operation is indicated by a dashed line 18.
  • This compacting by the sieve-shaped bottom element 3 rigidifies the preform to such an extent that the preform will retain its uniform thickness and thus form a uniform layer even in the steep regions, even after the removal of the sieve-shaped bottom element 3, so that the preform can be further treated subsequent to the removal of the bottom element 3 either by cold pre-pressing or even by an immediately following hot pressing.
  • the embodiment illustrated in FIG. 10 differs from the embodiment described above in connection with FIG. 9 only by the fact that the final article to be produced, for which a preform is to be made, does not include any relatively narrow, round depressions (such as the above-discussed pellet legs), but rather includes elongated depressions having relatively large width.
  • the sieve-shaped bottom element 3 has solid walls only in the regions of the flanks and is again perforated at the bottom of the depression.
  • preforms can be made in accordance with the above-discussed method from a chip or fibrous substance which is intermixed with a binder, which preforms can then be further treated in order to obtain compressed profiled articles which possess a uniform wall thickness even in the region of steep, almost perpendicularly extending regions.
  • the sieve-shaped bottom element 3 depending on the time period for which it acts on the preform, can produce on the upper surface of the preform a pattern which corresponds to the perforated shape of the sieve-shaped bottom element 3, which pattern is then also recognizable on the surface of the finally pressed profiled article. This, however, is undesirable under some circumstances and in connection with some compressed articles.
  • the lower mold consists of a lateral wall 19 and a bottom wall 20, these walls 19 and 20 bounding a forming space 21 which is to be filled with a predetermined amount of the substance.
  • the box-shaped container 1 is placed over the lower mold 19, 20, the bottom element of the container 1 being constituted by two sieve-shaped bottom members 22 and 23.
  • the bottom members 22 and 23 delimit the forming space 21 from above in the assembled condition of the container 1 with the lower mold 19, 20.
  • These two sieve-shaped bottom members 22 and 23 are so connected with a non-illustrated conventional vibratory drive that each of the bottom members 22 and 23 conducts a vibratory movement in horizontal direction, relative to the container 1 and also relative to the other bottom member 23 or 22.
  • the lower sieve-shaped bottom member 23 conducts a linear movement, as indicated by arrows 24.
  • the upper sieve-shaped bottom wall 22 conducts a translatory motion along a circular trajectory, as indicated by the elliptical arrow 25.
  • the filling space which is provided in the box-shaped container 1 is first filled with the substance which is admitted into such filling space either intermittently by means of a filling receptacle or continuously by means of a slide or the like.
  • the filling of the forming space 21 of the lower mold 19, 20 follows the assembly of the container 1 with the lower mold 19, 20 in such a manner that the bottom members 22 and 23 are set into motion. Now, the substance falls through the sieve-shaped bottom members 22 and 23 for so long until the forming space 21 is filled with the substance, without the de-mixing effect of the substance being encountered. Even when the movement of the sieve-shaped bottom members 22 and 23 continues after the forming space 21 has been already filled with the substance, no further substance can enter the forming space 21 of the lower mold 19, 20.
  • the new apparatus can be constructed even so that a profiled article with an especially flat and smooth upper surface can be produced from the substance filled into the forming space 21 of the lower mold 19, 20.
  • This result is obtained when the lower sieve-shaped bottom member 23 has a relatively small spacing between each two of the perforations thereof, while the upper sieve-shaped bottom member 22 has its perforations located at distances which are two to six times greater than the spacings of the perforations of the lower sieve-shaped bottom member 23, and particularly when the two sieve-shaped bottom members 22 and 23 are vibrated at different speeds.
  • the lower sieve-shaped bottom member 23 has perforations of such dimensions that even the coarsest particles of the substance can penetrate therethrough.
  • the dimensions of the perforations of the lower sieve-shaped bottom member 23 amount to, for instance, six to ten millimeters.
  • the novel apparatus With the novel apparatus, uniform fillings are always obtained of the forming spaces of lower molds with out running the danger of de-mixing, and the articles produced in this manner have a finely particulate upper surface without impressions of the sieve pattern therein.
  • the apparatus is very easy to handle, which is of a particular prominence in series production of the preforms and of the final articles.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
US05/904,561 1976-04-28 1978-05-10 Method of and an apparatus for making preforms from a pourable substance Expired - Lifetime US4214861A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE2618599 1976-04-28
DE19762618599 DE2618599C3 (de) 1976-04-28 1976-04-28 Vorrichtung zum dosierten Füllen stationärer Preßformen
DE19762621717 DE2621717C2 (de) 1976-05-15 1976-05-15 Vorrichtung zum dosierten Füllen stationärer Preßformen
DE2621717 1976-05-15
DE2709467 1977-03-04
DE19772709467 DE2709467C3 (de) 1977-03-04 1977-03-04 Verfahren und Vorrichtung zur Herstellung einer Matte aus nicht fließfähiger Preßmasse für Preßkörper

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US05790615 Division 1977-04-25

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US4214861A true US4214861A (en) 1980-07-29

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US05/904,561 Expired - Lifetime US4214861A (en) 1976-04-28 1978-05-10 Method of and an apparatus for making preforms from a pourable substance
US06/048,540 Expired - Lifetime US4225545A (en) 1976-03-04 1979-06-13 Method of and an apparatus for making preforms from a pourable substance

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US06/048,540 Expired - Lifetime US4225545A (en) 1976-03-04 1979-06-13 Method of and an apparatus for making preforms from a pourable substance

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US (2) US4214861A (enrdf_load_stackoverflow)
JP (1) JPS52154877A (enrdf_load_stackoverflow)
AT (1) AT364519B (enrdf_load_stackoverflow)
AU (1) AU513402B2 (enrdf_load_stackoverflow)
BE (1) BE853956A (enrdf_load_stackoverflow)
BR (1) BR7702611A (enrdf_load_stackoverflow)
CA (1) CA1103419A (enrdf_load_stackoverflow)
CH (1) CH627126A5 (enrdf_load_stackoverflow)
CS (1) CS219881B2 (enrdf_load_stackoverflow)
DD (1) DD130121A5 (enrdf_load_stackoverflow)
FR (1) FR2349435A1 (enrdf_load_stackoverflow)
GB (1) GB1589665A (enrdf_load_stackoverflow)
IT (1) IT1078427B (enrdf_load_stackoverflow)
MX (1) MX144053A (enrdf_load_stackoverflow)
NL (1) NL183502C (enrdf_load_stackoverflow)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
US5469971A (en) * 1992-02-26 1995-11-28 Estee Lauder Inc. Method and apparatus for deagglomerating powder
EP0970788A1 (de) * 1998-07-10 2000-01-12 Werzalit Ag + Co. Vorrichtung zum Herstellen eines Vlieses aus einer faserförmigen Pressmasse
US6243931B1 (en) 1998-09-15 2001-06-12 Batesville Services, Inc. Casket lid and method and making same
US20040244163A1 (en) * 1998-09-15 2004-12-09 Batesville Services, Inc. Casket lid and method of making same

Families Citing this family (8)

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ATE30532T1 (de) * 1983-02-05 1987-11-15 Werz Pressholz Werzalit Vorrichtung zur herstellung von formteilen.
JPS59169837A (ja) * 1983-03-15 1984-09-25 ヴエルツアリト−ヴエルケ・ヨツト・エフ・ヴエルツ・コマンデ　イ−トゲゼルシャフト 異なる断面形を有するプレス成形体製造用フリースの製造法
JPS6163760A (ja) * 1984-08-28 1986-04-01 新東工業株式会社 繊維質成形層体の製造方法
JPH0712604B2 (ja) * 1985-12-06 1995-02-15 トヨタ自動車株式会社 木質系成形体の製造方法
ATE152031T1 (de) * 1993-08-26 1997-05-15 Werzalit Ag & Co Vorrichtung zum einsatz beim einfüllen eines gemisches in ein presswerkzeug
US20030102589A1 (en) * 1999-11-24 2003-06-05 Waltz Ross E. Interacting edging block business model algorithm
DE102004030900A1 (de) * 2004-06-25 2006-01-26 Henkel Kgaa Herstellung teilchenförmiger Peroxycarbonsäurezusammensetzungen
JP5934908B2 (ja) * 2012-02-08 2016-06-15 パナソニックＩｐマネジメント株式会社 パーティクルボードの製造方法

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US5469971A (en) * 1992-02-26 1995-11-28 Estee Lauder Inc. Method and apparatus for deagglomerating powder
EP0970788A1 (de) * 1998-07-10 2000-01-12 Werzalit Ag + Co. Vorrichtung zum Herstellen eines Vlieses aus einer faserförmigen Pressmasse
US6243931B1 (en) 1998-09-15 2001-06-12 Batesville Services, Inc. Casket lid and method and making same
US6503429B1 (en) 1998-09-15 2003-01-07 Batesville Services, Inc. Casket lid and method of making same
US20040244163A1 (en) * 1998-09-15 2004-12-09 Batesville Services, Inc. Casket lid and method of making same
US6849141B2 (en) 1998-09-15 2005-02-01 Batesville Services, Inc. Casket lid and method of making same
US6922877B2 (en) 1998-09-15 2005-08-02 Batesville Services, Inc. Casket lid and method of making same
US7147811B2 (en) 1998-09-15 2006-12-12 Batesville Services, Inc. Casket lid and method of making same
US7247264B2 (en) 1998-09-15 2007-07-24 Batesville Services, Inc. Casket lid and method of making same

Also Published As

Publication number Publication date
DD130121A5 (de) 1978-03-08
CS219881B2 (en) 1983-03-25
AT364519B (de) 1981-10-27
AU2458777A (en) 1978-11-02
FR2349435B1 (enrdf_load_stackoverflow) 1982-03-26
BE853956A (fr) 1977-08-16
AU513402B2 (en) 1980-11-27
US4225545A (en) 1980-09-30
NL7704496A (nl) 1977-11-01
GB1589665A (en) 1981-05-20
ATA278677A (de) 1981-03-15
JPH0147282B2 (enrdf_load_stackoverflow) 1989-10-13
NL183502B (nl) 1988-06-16
FR2349435A1 (fr) 1977-11-25
JPS52154877A (en) 1977-12-22
CA1103419A (en) 1981-06-23
BR7702611A (pt) 1978-01-17
CH627126A5 (enrdf_load_stackoverflow) 1981-12-31
IT1078427B (it) 1985-05-08
NL183502C (nl) 1988-11-16
MX144053A (es) 1981-08-25

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